RienaWBWRenderer.java

/*******************************************************************************
 * Copyright (c) 2007, 2014 compeople AG and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    compeople AG - initial API and implementation
 *******************************************************************************/
package org.eclipse.riena.e4.launcher.rendering;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.inject.Inject;
import javax.inject.Named;

import org.osgi.service.event.Event;
import org.osgi.service.event.EventHandler;

import org.eclipse.core.databinding.observable.Realm;
import org.eclipse.e4.core.contexts.IEclipseContext;
import org.eclipse.e4.core.di.annotations.Optional;
import org.eclipse.e4.core.services.events.IEventBroker;
import org.eclipse.e4.core.services.log.Logger;
import org.eclipse.e4.ui.internal.workbench.Activator;
import org.eclipse.e4.ui.internal.workbench.E4Workbench;
import org.eclipse.e4.ui.internal.workbench.PartServiceSaveHandler;
import org.eclipse.e4.ui.internal.workbench.Policy;
import org.eclipse.e4.ui.model.application.MApplication;
import org.eclipse.e4.ui.model.application.ui.MContext;
import org.eclipse.e4.ui.model.application.ui.MElementContainer;
import org.eclipse.e4.ui.model.application.ui.MUIElement;
import org.eclipse.e4.ui.model.application.ui.advanced.MPerspective;
import org.eclipse.e4.ui.model.application.ui.advanced.MPlaceholder;
import org.eclipse.e4.ui.model.application.ui.basic.MPart;
import org.eclipse.e4.ui.model.application.ui.basic.MPartStack;
import org.eclipse.e4.ui.model.application.ui.basic.MTrimBar;
import org.eclipse.e4.ui.model.application.ui.basic.MTrimmedWindow;
import org.eclipse.e4.ui.model.application.ui.basic.MWindow;
import org.eclipse.e4.ui.services.IServiceConstants;
import org.eclipse.e4.ui.services.IStylingEngine;
import org.eclipse.e4.ui.workbench.IPresentationEngine;
import org.eclipse.e4.ui.workbench.UIEvents;
import org.eclipse.e4.ui.workbench.modeling.EPartService;
import org.eclipse.e4.ui.workbench.modeling.ISaveHandler;
import org.eclipse.e4.ui.workbench.modeling.IWindowCloseHandler;
import org.eclipse.e4.ui.workbench.renderers.swt.CSSEngineHelper;
import org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer;
import org.eclipse.e4.ui.workbench.renderers.swt.WBWRenderer;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.CheckboxTableViewer;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.window.IShellProvider;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.events.ControlListener;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.ShellAdapter;
import org.eclipse.swt.events.ShellEvent;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Widget;

import org.eclipse.riena.e4.launcher.E4XMIConstants;
import org.eclipse.riena.e4.launcher.part.StatusLinePart;
import org.eclipse.riena.internal.ui.swt.utils.RcpUtilities;
import org.eclipse.riena.navigation.ApplicationNodeManager;
import org.eclipse.riena.navigation.ui.swt.component.SwitcherComposite;
import org.eclipse.riena.ui.swt.layout.DpiGridLayout;
import org.eclipse.riena.ui.swt.lnf.LnfKeyConstants;
import org.eclipse.riena.ui.swt.lnf.LnfManager;
import org.eclipse.riena.ui.swt.lnf.renderer.DialogBorderRenderer;
import org.eclipse.riena.ui.swt.separator.Separator;
import org.eclipse.riena.ui.swt.utils.UIControlsFactory;

/**
 * Render a Window or Workbench Window.
 * <p>
 * This class is a copy of {@link WBWRenderer}. All changes are collected in riena...() methods so that they can be easily identified.
 * <p>
 * TODO: provide a better solution when Bug 361133 is fixed
 */
public class RienaWBWRenderer extends SWTPartRenderer {

	public static final String SHELL_CREATED = "shellCreated"; //$NON-NLS-1$
	private static String ShellMinimizedTag = "shellMinimized"; //$NON-NLS-1$
	private static String ShellMaximizedTag = "shellMaximized"; //$NON-NLS-1$

	private class WindowSizeUpdateJob implements Runnable {
		public List<MWindow> windowsToUpdate = new ArrayList<MWindow>();

		public void run() {
			clearSizeUpdate();
			while (!windowsToUpdate.isEmpty()) {
				final MWindow window = windowsToUpdate.remove(0);
				final Shell shell = (Shell) window.getWidget();
				if (shell == null || shell.isDisposed()) {
					continue;
				}

				shell.setBounds(window.getX(), window.getY(), window.getWidth(), window.getHeight());
			}
		}
	}

	WindowSizeUpdateJob boundsJob;

	void clearSizeUpdate() {
		boundsJob = null;
	}

	boolean ignoreSizeChanges = false;

	@Inject
	Logger logger;

	@Inject
	private IEventBroker eventBroker;

	@Inject
	private IPresentationEngine engine;

	private EventHandler shellUpdater;
	private EventHandler visibilityHandler;
	private EventHandler sizeHandler;
	private EventHandler childHandler;

	/**
	 * manages some Riena-specific window aspects
	 */
	private final ApplicationView applicationView = new ApplicationView();

	public RienaWBWRenderer() {
		super();
	}

	MPart activePart = null;
	private Composite header;
	private Composite mainMenu;
	private Composite mainToolBar;
	private Composite statusLine;
	private Composite perspectiveStack;

	@Inject
	void trackActivePart(@Optional
	@Named(IServiceConstants.ACTIVE_PART)
	final MPart p) {
		if (activePart == p) {
			return;
		}

		if (activePart != null) {
			activePart.getTags().remove("active"); //$NON-NLS-1$

			MUIElement parent = activePart.getParent();
			if (parent == null && activePart.getCurSharedRef() != null) {
				final MPlaceholder ph = activePart.getCurSharedRef();
				parent = ph.getParent();
			}
			if (parent instanceof MPartStack) {
				styleStack((MPartStack) parent, false);
			} else {
				if (activePart.getWidget() != null) {
					setCSSInfo(activePart, activePart.getWidget());
				}
			}
		}

		activePart = p;

		if (activePart != null) {
			activePart.getTags().add("active"); //$NON-NLS-1$
			MUIElement parent = activePart.getParent();
			if (parent == null && activePart.getCurSharedRef() != null) {
				final MPlaceholder ph = activePart.getCurSharedRef();
				parent = ph.getParent();
			}
			if (parent instanceof MPartStack && parent.getWidget() != null) {
				styleStack((MPartStack) parent, true);
			} else if (activePart.getWidget() != null) {
				setCSSInfo(activePart, activePart.getWidget());
			}
		}
	}

	private void styleStack(final MPartStack stack, final boolean active) {
		if (!active) {
			stack.getTags().remove("active"); //$NON-NLS-1$
		} else {
			stack.getTags().add("active"); //$NON-NLS-1$
		}

		if (stack.getWidget() != null) {
			setCSSInfo(stack, stack.getWidget());
		}
	}

	/**
	 * Closes the provided detached window.
	 * 
	 * @param window
	 *            the detached window to close
	 * @return <code>true</code> if the window should be closed, <code>false</code> otherwise
	 */
	private boolean closeDetachedWindow(final MWindow window) {
		final EPartService partService = (EPartService) window.getContext().get(EPartService.class.getName());
		final List<MPart> parts = modelService.findElements(window, null, MPart.class, null);
		// this saves one part at a time, not ideal but better than not saving
		// at all
		for (final MPart part : parts) {
			if (!partService.savePart(part, true)) {
				// user cancelled the operation, return false
				return false;
			}
		}

		// hide every part individually, following 3.x behaviour
		for (final MPart part : parts) {
			partService.hidePart(part);
		}
		return true;
	}

	@PostConstruct
	public void init() {
		shellUpdater = new EventHandler() {
			public void handleEvent(final Event event) {
				// Ensure that this event is for a MMenuItem
				final Object objElement = event.getProperty(UIEvents.EventTags.ELEMENT);
				if (!(event.getProperty(UIEvents.EventTags.ELEMENT) instanceof MWindow)) {
					return;
				}

				// Is this listener interested ?
				final MWindow windowModel = (MWindow) objElement;
				if (windowModel.getRenderer() != RienaWBWRenderer.this) {
					return;
				}

				// No widget == nothing to update
				final Shell theShell = (Shell) windowModel.getWidget();
				if (theShell == null) {
					return;
				}

				final String attName = (String) event.getProperty(UIEvents.EventTags.ATTNAME);

				if (UIEvents.UILabel.LABEL.equals(attName)) {
					final String newTitle = (String) event.getProperty(UIEvents.EventTags.NEW_VALUE);
					theShell.setText(newTitle);
				} else if (UIEvents.UILabel.ICONURI.equals(attName)) {
					theShell.setImage(getImage(windowModel));
				} else if (UIEvents.UILabel.TOOLTIP.equals(attName)) {
					final String newTTip = (String) event.getProperty(UIEvents.EventTags.NEW_VALUE);
					theShell.setToolTipText(newTTip);
				}
			}
		};

		eventBroker.subscribe(UIEvents.UILabel.TOPIC_ALL, shellUpdater);

		visibilityHandler = new EventHandler() {
			public void handleEvent(final Event event) {
				// Ensure that this event is for a MMenuItem
				final Object objElement = event.getProperty(UIEvents.EventTags.ELEMENT);
				if (!(objElement instanceof MWindow)) {
					return;
				}

				// Is this listener interested ?
				final MWindow windowModel = (MWindow) objElement;
				if (windowModel.getRenderer() != RienaWBWRenderer.this) {
					return;
				}

				// No widget == nothing to update
				final Shell theShell = (Shell) windowModel.getWidget();
				if (theShell == null) {
					return;
				}

				final String attName = (String) event.getProperty(UIEvents.EventTags.ATTNAME);

				if (UIEvents.UIElement.VISIBLE.equals(attName)) {
					final boolean isVisible = (Boolean) event.getProperty(UIEvents.EventTags.NEW_VALUE);
					theShell.setVisible(isVisible);
				}
			}
		};

		eventBroker.subscribe(UIEvents.UIElement.TOPIC_VISIBLE, visibilityHandler);

		sizeHandler = new EventHandler() {
			public void handleEvent(final Event event) {
				if (ignoreSizeChanges) {
					return;
				}

				// Ensure that this event is for a MMenuItem
				final Object objElement = event.getProperty(UIEvents.EventTags.ELEMENT);
				if (!(objElement instanceof MWindow)) {
					return;
				}

				// Is this listener interested ?
				final MWindow windowModel = (MWindow) objElement;
				if (windowModel.getRenderer() != RienaWBWRenderer.this) {
					return;
				}

				// No widget == nothing to update
				final Shell theShell = (Shell) windowModel.getWidget();
				if (theShell == null) {
					return;
				}

				final String attName = (String) event.getProperty(UIEvents.EventTags.ATTNAME);

				if (UIEvents.Window.X.equals(attName) || UIEvents.Window.Y.equals(attName) || UIEvents.Window.WIDTH.equals(attName)
						|| UIEvents.Window.HEIGHT.equals(attName)) {
					if (boundsJob == null) {
						boundsJob = new WindowSizeUpdateJob();
						boundsJob.windowsToUpdate.add(windowModel);
						theShell.getDisplay().asyncExec(boundsJob);
					} else {
						if (!boundsJob.windowsToUpdate.contains(windowModel)) {
							boundsJob.windowsToUpdate.add(windowModel);
						}
					}
				}
			}
		};

		eventBroker.subscribe(UIEvents.Window.TOPIC_ALL, sizeHandler);

		childHandler = new EventHandler() {
			public void handleEvent(final Event event) {
				// Track additions/removals of the active part and keep its
				// stack styled correctly
				final Object changedObj = event.getProperty(UIEvents.EventTags.ELEMENT);
				if (!(changedObj instanceof MPartStack)) {
					return;
				}
				final MPartStack stack = (MPartStack) changedObj;

				final String eventType = (String) event.getProperty(UIEvents.EventTags.TYPE);
				if (UIEvents.EventTypes.ADD.equals(eventType)) {
					final MUIElement added = (MUIElement) event.getProperty(UIEvents.EventTags.NEW_VALUE);
					if (added == activePart) {
						styleStack(stack, true);
					}
				} else if (UIEvents.EventTypes.REMOVE.equals(eventType)) {
					Activator.trace(Policy.DEBUG_RENDERER, "Child Removed", null); //$NON-NLS-1$
					final MUIElement removed = (MUIElement) event.getProperty(UIEvents.EventTags.OLD_VALUE);
					if (removed == activePart) {
						styleStack(stack, false);
					}
				}
			}
		};

		eventBroker.subscribe(UIEvents.ElementContainer.TOPIC_CHILDREN, childHandler);
	}

	@PreDestroy
	public void contextDisposed() {
		eventBroker.unsubscribe(shellUpdater);
		eventBroker.unsubscribe(visibilityHandler);
		eventBroker.unsubscribe(sizeHandler);
		eventBroker.unsubscribe(childHandler);
	}

	@Override
	public Object createWidget(final MUIElement element, final Object parent) {
		final Widget newWidget;

		if (!(element instanceof MWindow) || (parent != null && !(parent instanceof Control))) {
			return null;
		}

		final MWindow wbwModel = (MWindow) element;

		final MApplication appModel = wbwModel.getContext().get(MApplication.class);
		final Boolean rtlMode = (Boolean) appModel.getTransientData().get(E4Workbench.RTL_MODE);
		final int rtlStyle = (rtlMode != null && rtlMode.booleanValue()) ? SWT.RIGHT_TO_LEFT : 0;

		final Shell parentShell = parent == null ? null : ((Control) parent).getShell();

		final Shell wbwShell;
		if (parentShell == null) {
			wbwShell = rienaCreateShell(rtlStyle, wbwModel);
			wbwModel.getTags().add("topLevel"); //$NON-NLS-1$
		} else if (wbwModel.getTags().contains("dragHost")) { //$NON-NLS-1$
			wbwShell = new Shell(parentShell, SWT.BORDER | rtlStyle);
			wbwShell.setAlpha(110);
		} else {
			wbwShell = new Shell(parentShell, SWT.TOOL | SWT.TITLE | SWT.RESIZE | rtlStyle);
		}

		wbwShell.setBackgroundMode(SWT.INHERIT_DEFAULT);

		final Rectangle modelBounds = wbwShell.getBounds();
		if (wbwModel instanceof EObject) {
			final EObject wbw = (EObject) wbwModel;
			final EClass wbwclass = wbw.eClass();
			// use eIsSet rather than embed sentinel values
			if (wbw.eIsSet(wbwclass.getEStructuralFeature("x"))) { //$NON-NLS-1$
				modelBounds.x = wbwModel.getX();
			}
			if (wbw.eIsSet(wbwclass.getEStructuralFeature("y"))) { //$NON-NLS-1$
				modelBounds.y = wbwModel.getY();
			}
			if (wbw.eIsSet(wbwclass.getEStructuralFeature("height"))) { //$NON-NLS-1$
				modelBounds.height = wbwModel.getHeight();
			}
			if (wbw.eIsSet(wbwclass.getEStructuralFeature("width"))) { //$NON-NLS-1$
				modelBounds.width = wbwModel.getWidth();
			}
		}
		// Force the shell onto the display if it would be invisible otherwise
		final Rectangle displayBounds = Display.getCurrent().getBounds();
		if (!modelBounds.intersects(displayBounds)) {
			final Rectangle clientArea = Display.getCurrent().getClientArea();
			modelBounds.x = clientArea.x;
			modelBounds.y = clientArea.y;
		}
		wbwShell.setBounds(modelBounds);

		setCSSInfo(wbwModel, wbwShell);

		// set up context
		final IEclipseContext localContext = getContext(wbwModel);

		// We need to retrieve specific CSS properties for our layout.
		final CSSEngineHelper helper = new CSSEngineHelper(localContext, wbwShell);
		//		final TrimmedPartLayout tl = new TrimmedPartLayout(wbwShell);
		//		tl.gutterTop = helper.getMarginTop(0);
		//		tl.gutterBottom = helper.getMarginBottom(0);
		//		tl.gutterLeft = helper.getMarginLeft(0);
		//		tl.gutterRight = helper.getMarginRight(0);

		rienaCreateContents(wbwShell);

		//		wbwShell.setLayout(tl);
		newWidget = wbwShell;
		bindWidget(element, newWidget);

		// Add the shell into the WBW's context
		localContext.set(Shell.class.getName(), wbwShell);
		localContext.set(E4Workbench.LOCAL_ACTIVE_SHELL, wbwShell);
		setCloseHandler(wbwModel);
		localContext.set(IShellProvider.class.getName(), new IShellProvider() {
			public Shell getShell() {
				return wbwShell;
			}
		});
		localContext.set(ISaveHandler.class, new PartServiceSaveHandler() {
			@Override
			public Save promptToSave(final MPart dirtyPart) {
				final Shell shell = (Shell) context.get(IServiceConstants.ACTIVE_SHELL);
				final Object[] elements = promptForSave(shell, Collections.singleton(dirtyPart));
				if (elements == null) {
					return Save.CANCEL;
				}
				return elements.length == 0 ? Save.NO : Save.YES;
			}

			@Override
			public Save[] promptToSave(final Collection<MPart> dirtyParts) {
				final List<MPart> parts = new ArrayList<MPart>(dirtyParts);
				final Shell shell = (Shell) context.get(IServiceConstants.ACTIVE_SHELL);
				final Save[] response = new Save[dirtyParts.size()];
				final Object[] elements = promptForSave(shell, parts);
				if (elements == null) {
					Arrays.fill(response, Save.CANCEL);
				} else {
					Arrays.fill(response, Save.NO);
					for (int i = 0; i < elements.length; i++) {
						response[parts.indexOf(elements[i])] = Save.YES;
					}
				}
				return response;
			}
		});

		if (wbwModel.getLabel() != null) {
			wbwShell.setText(wbwModel.getLocalizedLabel());
		}

		wbwShell.setImage(getImage(wbwModel));
		// TODO: This should be added to the model, see bug 308494
		wbwShell.setImages(Window.getDefaultImages());

		applicationView.doInitialBinding();

		return newWidget;
	}

	/**
	 * We need a shell with the NO_TRIM style flag
	 * 
	 * @param rtlStyle
	 * @return
	 */
	private Shell rienaCreateShell(final int rtlStyle, final MWindow modelElement) {
		int shellStyle = rtlStyle | SWT.DOUBLE_BUFFERED;
		if (isHideOSBorder()) {
			shellStyle = rtlStyle | SWT.NO_TRIM;
		} else {
			shellStyle = rtlStyle | SWT.SHELL_TRIM;
		}

		final Shell shell = new Shell(Display.getCurrent(), shellStyle);
		RcpUtilities.setShell(shell);
		final Rectangle shellBounds = applicationView.initShell(shell);
		modelElement.setX(shellBounds.x);
		modelElement.setY(shellBounds.y);
		modelElement.setWidth(shellBounds.width);
		modelElement.setHeight(shellBounds.height);
		return shell;
	}

	private Boolean isHideOSBorder() {
		return LnfManager.getLnf().getBooleanSetting(LnfKeyConstants.SHELL_HIDE_OS_BORDER);
	}

	private void rienaCreateContents(final Composite clientArea) {
		final DpiGridLayout layout = new DpiGridLayout();
		layout.marginWidth = getShellBorderWidth();
		layout.marginHeight = getShellBorderWidth();
		layout.horizontalSpacing = 0;
		layout.verticalSpacing = 0;
		clientArea.setLayout(layout);

		header = new Composite(clientArea, SWT.NONE);
		final GridData headerLayoutData = new GridData(GridData.FILL_HORIZONTAL);
		final int headerPartHeight = SwitcherComposite.getShellPadding() + SwitcherComposite.getSwitchterHeight() + SwitcherComposite.getSwitchterTopMargin();
		// headerLayoutData.heightHint = headerPartHeight;
		header.setLayoutData(headerLayoutData);
		header.setLayout(new FillLayout());

		mainMenu = new Composite(clientArea, SWT.NONE);
		final GridData mainMenuLayoutData = new GridData(GridData.FILL_HORIZONTAL);
		mainMenuLayoutData.verticalIndent = LnfManager.getLnf().getIntegerSetting(LnfKeyConstants.MENUBAR_TOP_MARGIN);
		mainMenu.setLayoutData(mainMenuLayoutData);
		final FillLayout mainMenuLayout = new FillLayout();
		final Integer shellPadding = isHideOSBorder() ? LnfManager.getLnf().getIntegerSetting(LnfKeyConstants.TITLELESS_SHELL_PADDING) : 0;
		mainMenuLayout.marginWidth = shellPadding;
		mainMenu.setLayout(mainMenuLayout);

		final Separator separator = UIControlsFactory.createSeparator(clientArea, SWT.HORIZONTAL);
		final GridData separatorLayoutData = new GridData(GridData.FILL_HORIZONTAL);
		separatorLayoutData.heightHint = 2;
		separator.setLayoutData(separatorLayoutData);

		mainToolBar = new Composite(clientArea, SWT.NONE);
		final GridData mainToolBarLayoutData = new GridData(GridData.FILL_HORIZONTAL);
		mainToolBarLayoutData.verticalIndent = LnfManager.getLnf().getIntegerSetting(LnfKeyConstants.TOOLBAR_TOP_MARGIN);
		mainToolBar.setLayoutData(mainToolBarLayoutData);
		final FillLayout mainToolBarLayout = new FillLayout();
		mainToolBarLayout.marginWidth = shellPadding;
		mainToolBar.setLayout(mainToolBarLayout);

		perspectiveStack = new Composite(clientArea, SWT.NONE);
		perspectiveStack.setLayoutData(new GridData(GridData.FILL_BOTH));
		final FillLayout perspectiveStackLayout = new FillLayout();
		perspectiveStackLayout.marginWidth = shellPadding;
		perspectiveStack.setLayout(perspectiveStackLayout);

		applicationView.createInfoFlyout(perspectiveStack).setPositionCorrectionY(
				LnfManager.getLnf().getIntegerSetting(LnfKeyConstants.TOOLBAR_WORK_AREA_VERTICAL_GAP));

		statusLine = new Composite(clientArea, SWT.NONE);
		final GridData statusLayoutData = new GridData(GridData.FILL_HORIZONTAL);
		statusLayoutData.verticalIndent = shellPadding;
		statusLayoutData.heightHint = LnfManager.getLnf().getIntegerSetting(LnfKeyConstants.STATUSLINE_HEIGHT) + StatusLinePart.BOTTOM_OFFSET;
		statusLine.setLayoutData(statusLayoutData);
		statusLine.setLayout(new FillLayout());
	}

	/**
	 * Returns the width of the shell border.
	 * 
	 * @return border width
	 */
	private static int getShellBorderWidth() {
		final DialogBorderRenderer borderRenderer = (DialogBorderRenderer) LnfManager.getLnf().getRenderer(LnfKeyConstants.TITLELESS_SHELL_BORDER_RENDERER);
		return borderRenderer != null ? borderRenderer.getBorderWidth() : 0;
	}

	private void setCloseHandler(final MWindow window) {
		final IEclipseContext context = window.getContext();
		// no direct model parent, must be a detached window
		if (window.getParent() == null) {
			context.set(IWindowCloseHandler.class.getName(), new IWindowCloseHandler() {
				public boolean close(final MWindow window) {
					return closeDetachedWindow(window);
				}
			});
		} else {
			context.set(IWindowCloseHandler.class.getName(), new IWindowCloseHandler() {
				public boolean close(final MWindow window) {
					final EPartService partService = (EPartService) window.getContext().get(EPartService.class.getName());
					return partService.saveAll(true);
				}
			});
		}
	}

	@Override
	public void hookControllerLogic(final MUIElement me) {
		super.hookControllerLogic(me);

		final Widget widget = (Widget) me.getWidget();

		if (widget instanceof Shell && me instanceof MWindow) {
			final Shell shell = (Shell) widget;
			final MWindow w = (MWindow) me;
			shell.addControlListener(new ControlListener() {
				public void controlResized(final ControlEvent e) {
					// Don't store the maximized size in the model
					if (shell.getMaximized()) {
						return;
					}

					try {
						ignoreSizeChanges = true;
						w.setWidth(shell.getSize().x);
						w.setHeight(shell.getSize().y);
					} finally {
						ignoreSizeChanges = false;
					}
				}

				public void controlMoved(final ControlEvent e) {
					// Don't store the maximized size in the model
					if (shell.getMaximized()) {
						return;
					}

					try {
						ignoreSizeChanges = true;
						w.setX(shell.getLocation().x);
						w.setY(shell.getLocation().y);
					} finally {
						ignoreSizeChanges = false;
					}
				}
			});

			shell.addShellListener(new ShellAdapter() {
				@Override
				public void shellClosed(final ShellEvent e) {
					// override the shell close event
					e.doit = false;
					final MWindow window = (MWindow) e.widget.getData(OWNING_ME);
					final IWindowCloseHandler closeHandler = (IWindowCloseHandler) window.getContext().get(IWindowCloseHandler.class.getName());
					// if there's no handler or the handler permits the close
					// request, clean-up as necessary
					if (closeHandler == null || closeHandler.close(window)) {
						cleanUp(window);
					}
				}
			});
			shell.addListener(SWT.Activate, new Listener() {
				public void handleEvent(final org.eclipse.swt.widgets.Event event) {
					MUIElement parentME = w.getParent();
					if (parentME instanceof MApplication) {
						final MApplication app = (MApplication) parentME;
						app.setSelectedElement(w);
						w.getContext().activate();
					} else if (parentME == null) {
						parentME = (MUIElement) ((EObject) w).eContainer();
						if (parentME instanceof MContext) {
							w.getContext().activate();
						}
					}
				}
			});
		}
	}

	private void cleanUp(final MWindow window) {
		final Object parent = ((EObject) window).eContainer();
		if (parent instanceof MApplication) {
			final MApplication application = (MApplication) parent;
			final List<MWindow> children = application.getChildren();
			if (children.size() > 1) {
				// not the last window, destroy and remove
				window.setToBeRendered(false);
				children.remove(window);
			} else {
				// last window, just destroy without changing the model
				engine.removeGui(window);
			}
		} else if (parent != null) {
			window.setToBeRendered(false);
			// this is a detached window, check for parts
			if (modelService.findElements(window, null, MPart.class, null).isEmpty()) {
				// if no parts, remove it
				if (parent instanceof MWindow) {
					((MWindow) parent).getWindows().remove(window);
				} else if (parent instanceof MPerspective) {
					((MPerspective) parent).getWindows().remove(window);
				}
			}
		}
	}

	/*
	 * Processing the contents of a Workbench window has to take into account that there may be trim elements contained in its child list. Since the
	 * 
	 * @see org.eclipse.e4.ui.workbench.renderers.swt.SWTPartFactory#processContents (org.eclipse.e4.ui.model.application.MPart)
	 */
	@Override
	public void processContents(final MElementContainer me) {
		if (!(me instanceof MWindow)) {
			return;
		}
		final MWindow wbwModel = (MWindow) me;
		super.processContents(me);

		// Populate the main menu
		final IPresentationEngine renderer = (IPresentationEngine) context.get(IPresentationEngine.class.getName());
		if (wbwModel.getMainMenu() != null) {
			renderer.createGui(wbwModel.getMainMenu(), me.getWidget(), null);
			final Shell shell = (Shell) me.getWidget();
			shell.setMenuBar((Menu) wbwModel.getMainMenu().getWidget());
		}

		// create Detached Windows
		for (final MWindow dw : wbwModel.getWindows()) {
			renderer.createGui(dw, me.getWidget(), wbwModel.getContext());
		}

		// Populate the trim (if any)
		if (wbwModel instanceof MTrimmedWindow) {
			final Shell shell = (Shell) wbwModel.getWidget();
			final MTrimmedWindow tWindow = (MTrimmedWindow) wbwModel;
			for (final MTrimBar trimBar : tWindow.getTrimBars()) {
				renderer.createGui(trimBar, shell, wbwModel.getContext());
			}
		}

		rienaActivateApplicationNode();
	}

	private void rienaActivateApplicationNode() {
		final Realm realm = SWTObservables.getRealm(Display.getCurrent());
		Realm.runWithDefault(realm, new Runnable() {

			public void run() {
				ApplicationNodeManager.getApplicationNode().activate();
			}
		});
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.e4.ui.internal.workbench.swt.AbstractPartRenderer#getUIContainer (org.eclipse.e4.ui.model.application.MUIElement)
	 */
	@Override
	public Object getUIContainer(final MUIElement element) {
		MUIElement parent = element.getParent();
		if (parent == null) {
			// might be a detached window
			parent = (MUIElement) ((EObject) element).eContainer();
			return parent == null ? null : parent.getWidget();
		}

		final String elementId = element.getElementId();
		if (E4XMIConstants.HEADER_PART_ID.equals(elementId)) {
			return header;
		}
		if (E4XMIConstants.MAIN_MENU_PART_ID.equals(elementId)) {
			return mainMenu;
		}
		if (E4XMIConstants.MAIN_TOOLBAR_PART_ID.equals(elementId)) {
			return mainToolBar;
		}
		if (E4XMIConstants.STATUSLINE_PART_ID.equals(elementId)) {
			return statusLine;
		}
		if (E4XMIConstants.PERSPECTIVE_STACK_ID.equals(elementId)) {
			return perspectiveStack;
		}

		return null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.e4.ui.workbench.renderers.PartFactory#postProcess(org.eclipse .e4.ui.model.application.MPart)
	 */
	@Override
	public void postProcess(final MUIElement shellME) {
		super.postProcess(shellME);

		final Shell shell = (Shell) shellME.getWidget();

		// Capture the max/min state
		final MUIElement disposeME = shellME;
		shell.addDisposeListener(new DisposeListener() {
			public void widgetDisposed(final DisposeEvent e) {
				final Shell shell = (Shell) e.widget;
				if (disposeME != null) {
					disposeME.getTags().remove(ShellMinimizedTag);
					disposeME.getTags().remove(ShellMaximizedTag);
					if (shell.getMinimized()) {
						disposeME.getTags().add(ShellMinimizedTag);
					}
					if (shell.getMaximized()) {
						disposeME.getTags().add(ShellMaximizedTag);
					}
				}
			}
		});

		// Apply the correct shell state
		if (shellME.getTags().contains(ShellMaximizedTag)) {
			shell.setMaximized(true);
		} else if (shellME.getTags().contains(ShellMinimizedTag)) {
			shell.setMinimized(true);
		}

		shell.layout(true);
		if (shellME.isVisible()) {
			shell.open();
		} else {
			shell.setVisible(false);
		}

		rienaPostProcess(shell);
	}

	/**
	 * notify the Riena SubApplicationBinder
	 * 
	 * @param shell
	 *            the newly created {@link Shell}
	 */
	private void rienaPostProcess(final Shell shell) {
		eventBroker.send(SHELL_CREATED, shell);
	}

	private Object[] promptForSave(final Shell parentShell, final Collection<MPart> saveableParts) {
		final SaveablePartPromptDialog dialog = new SaveablePartPromptDialog(parentShell, saveableParts);
		if (dialog.open() == Window.CANCEL) {
			return null;
		}

		return dialog.getCheckedElements();
	}

	@Inject
	private IEclipseContext context;

	private void applyDialogStyles(final Control control) {
		final IStylingEngine engine = (IStylingEngine) context.get(IStylingEngine.SERVICE_NAME);
		if (engine != null) {
			final Shell shell = control.getShell();
			if (shell.getBackgroundMode() == SWT.INHERIT_NONE) {
				shell.setBackgroundMode(SWT.INHERIT_DEFAULT);
			}

			engine.style(shell);
		}
	}

	class SaveablePartPromptDialog extends Dialog {

		private final Collection<MPart> collection;

		private CheckboxTableViewer tableViewer;

		private Object[] checkedElements = new Object[0];

		SaveablePartPromptDialog(final Shell shell, final Collection<MPart> collection) {
			super(shell);
			this.collection = collection;
		}

		@Override
		protected Control createDialogArea(Composite parent) {
			parent = (Composite) super.createDialogArea(parent);

			final Label label = new Label(parent, SWT.LEAD);
			label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
			label.setText("Select the parts to save:"); //$NON-NLS-1$

			tableViewer = CheckboxTableViewer.newCheckList(parent, SWT.SINGLE | SWT.BORDER);
			final GridData data = new GridData(SWT.FILL, SWT.FILL, true, true);
			data.heightHint = 250;
			data.widthHint = 300;
			tableViewer.getControl().setLayoutData(data);
			tableViewer.setLabelProvider(new LabelProvider() {
				@Override
				public String getText(final Object element) {
					return ((MPart) element).getLocalizedLabel();
				}
			});
			tableViewer.setContentProvider(ArrayContentProvider.getInstance());
			tableViewer.setInput(collection);
			tableViewer.setAllChecked(true);

			return parent;
		}

		@Override
		public void create() {
			super.create();
			applyDialogStyles(getShell());
		}

		@Override
		protected void okPressed() {
			checkedElements = tableViewer.getCheckedElements();
			super.okPressed();
		}

		public Object[] getCheckedElements() {
			return checkedElements;
		}

	}

}